Intermittent Fasting: Fast Weight Loss That Lasts (Udemy.com)
The Complete Guide to Using Intermittent Fasting to Lose Fat, Build Muscle, and Keep the Weight Off Forever
Created by: Dr. Frank O'Neill
Last updated November 2023
What you will learn
- A complete step-by-step guide to using Intermittent Fasting for optimal fat loss
- Learn the science behind the most common myths and misconceptions about Intermittent Fasting
- Learn the benefits of Intermittent Fasting and Calorie Cycling compared to traditional dieting
- Learn how to choose the best Intermittent Fasting plan for you weight loss goals
- Learn how to bust through weight loss stalls and plateaus
- Learn how to maintain your weight loss for the rest of your life
How it compares
Against the other 662 rated Udemy courses in Health & Fitness on CourseDuck:
- Rating4.7 out of 5higher than 66% of them
- Reviews887#153 of 663 by number of reviews
- Length7.5 hourslonger than 87% of them
- Last updatedNovember 2023earlier than 62% of them
Course Description
*** This course has already helped HUNDREDS of people lose THOUSANDS of pounds. It will help you too! ***
This course is the definitive guide to using Intermittent Fasting as a powerful weight loss tool. Learn how you can use Intermittent Fasting (Alternate Day Fasting or Time-Restricted Eating) to lose fat, build muscle, and maintain your weight loss for the rest of your life.
My name is Dr. Frank O'Neill. I am an award-winning online instructor that has taught over 300 online courses in my 15-year teaching career. I have won 6 teaching awards at the school, state, and national levels. You are in good hands.
I was also my first weight loss student. This course will teach you the step-by-step guide that I used to:
Lose 49 pounds in 10 weeks
Lose 101.2 pounds in 6 months
Lose 165 pounds in 1 year
I will teach you how to avoid the most common Intermittent Fasting mistakes so that you can lose weight as quickly and safely as possible.
I am NOT here to teach you how to lose weight. I am here to teach you how to lose weight and keep it off for the rest of your life.
Lesson Overview:
What is Intermittent Fasting?
The truth about the difference between “clean” and “dirty” fasting
The science-backed answers to the most common myths and misconceptions about Intermittent Fasting
A fasting timeline that explains the four stages of every fasting window
Should I add exercise to my Intermittent Fasting program?
The proven metabolism-boosting benefits of Calorie Cycling compared to traditional diets
Discover all of the other health benefits of Intermittent Fasting (besides weight loss)
Learn how to determine your body fat, metabolic rate, and calorie target for rapid weight loss
Learn how to design the perfect Intermittent Fasting plan for your goals and your life
Answers to all of the most frequently asked questions about Alternate Day Fasting and Time-Restricted Eating
Learn how to ease into fasting and prepare for your first fast
Learn how to eat to make fasting easier and accelerate fat loss
How to deal with the most common complaints about Intermittent Fasting before they arise
How to bust through weight loss stalls and plateaus
How to maintain your weight loss for the rest of your life
All in all, this program includes:
16 Sections
6 ½ Hours of Information-Packed Lectures with information from over 40 scientific studies
Each short lecture video covers a single topic. Find any topic that you need right when you need it.
20 downloadable resources, including worksheets to help you choose your Intermittent Fasting Plan and set your calorie targets
So, if you want to lose fat, build muscle, and become a new you, this is the right course for you.
Remember, there is a 30-day 100% money-back guarantee. There is no reason to hesitate. Enroll now, see if you enjoy the course, and start your weight loss journey today!
Medical and Health Disclaimer:
This Video Course Presentation is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or symptom. Please consult a medical or health professional before you begin any exercise, nutrition, or supplementation program, or if you have questions about your health. Never disregard professional medical advice or delay in seeking it because of something you have read or seen on this informational and educational Video Course Presentation. Your use and reliance on this Video Course Presentation is at your sole risk. If you believe you may have a medical emergency, call 911 immediately.
Instructor Details
- 4.7 Rating
887 Reviews
Dr. Frank O'Neill
My name is Dr. Frank O'Neill. I am an award-winning online instructor that has taught over 300 online courses in my 15-year teaching career. I have won 6 teaching awards at the school, state, and national levels.
I also have experience as a Chiropractor, Clinical Researcher, Designated Civil Surgeon, and Independent Medical Examiner.
I have helped thousands of patients and students live healthier lives. I can help you too.
What makes me different?
Learn from someone that has been in your shoes. I am here to share my incredible weight loss journey and to help you achieve the same level of success.
By using the EXACT program that I will share in my courses, I was able to:
Lose 49 pounds in 10 weeks
Lose 101 pounds in 6 months
Lose 165 pounds in 1 year
I am NOT here to teach you how to lose weight. I am here to teach you how to lose weight and keep it off for the rest of your life.
What can I do for you?
I can help you lose weight by sharing the science-based weight loss and behavior change principles that you need to:
Develop a successful weight loss mindset
Build habits that lead to permanent weight loss
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Reviews
By Paul Walsh on 4/20/2026
Great course. I have been intermittent fasting (20-4) with 3-120 hour fasts over the last 4 months. I have lost 55lbs so far with 65 lbs. to go until goal. After completing this program, I have switched to an Alternate Day Fast and Feast program and increasing my workouts. I have been very concerned about losing lean body mass. I have 2 friends that have lost a lot of weight fasting, but they did it all wrong and have withered away. I feel this program has helped me identify the pitfalls of fasting and how to work around them. I have also added 1.5 hours of sleep per night after watching your class on sleeping. Great information and I feel like I am on a much better path to reach my goal of losing over 120 lbs. Thanks Dr. O
By Barbara Hermann on 1/5/2026
I am loving this course. I thought that I knew a lot about fasting already, having read many books. But, this man's sharing of his personal experience is invaluable. I've picked up lots of great tips here. Unfortunately, after I finished this course the sound disappeared. I was promised lifetime access but without sound it isn't good for much. I am disappointed that I can't use the course for reference.
By Ana Silva on 7/28/2025
Thank you Dr. O. I really liked this course, it's very clarifying and well based on scientific evidences. I've started my IF path in 2023 after listening to Gin Stephens podcasts. Sometimes more strict sometimes less. I always did a clean fasting more than 16 hours, usually 17 to 18 hours and it's still my lifestyle. I never followed an ADF as my physician told me it would not be the best because of my hypothyroidism (it's genetic and only us women from my family have it). I've lost a few Kg and I still have further 10 Kg to lose. Your course made me realise that I can be very flexible with the fasting lifestyle I want, and I'm now considering 24hours once a week. Let's see how it works, since my physiscian is now considering that after two years I'm very well adapted to an 17 hours time restricted fasting and my TSH, T3 and T4 didn't have such a big change.
By Jason D on 6/7/2024
Thanks for everything you've done! I found you on YouTube and then decided to buy your course to support your work (the YouTube information was quite valuable as is, but I like how you tailored your advice in this course, and you've gone above and beyond to help those in the Q&A section). My first degree was in Health Sciences, and I worked in medical and health research and data analytics for a decade. I also did an education degree (your pedagogy/presentation is impressive). Your information is very well-researched and accurate! I like how you have peer-reviewed citations, and it contains the most important and recent research to put into practice. I would highly recommend this course. It took me months to learn all the information condensed into this course, and I learned a lot of new mind-blowing things, like how much lean mass I could lose at certain caloric deficit levels and how larger deficits are not necessarily better. I knew this was the case, but I was unable to quantify it before I saw that cited study + methods.
By Susan Sunka on 11/28/2023
I'm 67 years old and have tried every diet known to man, many of them multiple times to try to lose weight. In all my years, no program or class has broken down the information about the physiology of how to determine my body fat %, TDEE and the right amount of calories needed to sustain lean body mass while still taking off fat. In looking back, I'm sure many times, I have sacrificed lean body mass in my dieting efforts to obtain a certain weight. While I am still taking the class and have not actually tried to implement the fasting principles yet, I am super excited to start on my new FAT loss journey!
By Michael Milewski on 11/5/2023
Started this 5 months ago but then had to go in for surgery, came out, and blew my whole diet sitting around. Back at it now and finishing the course. One thing I don't understand though is how much I should eat on eating days. I'm doing ADF and my minimum calorie target is -391 calories per day. So, I have enough body fat to supply my needs. My TDEE is 2588 and I'm subtracting 1000 from that (1588), plus 25% for 1985 calories on eating days with 0 calories on fasting days. Am I still eating too much?
By Augusto Dantas Teixeira on 9/19/2023
It was good overall, the intro/outro every video is quite annoying. The information with facts and evidence from real study cases makes it more credible. I know I can find information about electrolytes online, but I think this part was lacking, as in how to calculate how much of potassium/sodium/magnesium per day we should take, how spread out throughout the day etc. It can get a bit repetitive sometimes. Overall I learned a lot and will attempt ADF soon. Good course overall, recommended!
By Ahmed Elsayed Elsaid Fathelbab on 7/24/2023
This Course is comprehensive, with scientific-based facts, and a life-proof experiment. I have tried intermittent fasting and OMAD before and I have lost some weight before with less effort. I didn't count calories back then and didn't give much care for the Lean Mass Percent which made me lose some of it and gained the weight back after quitting due to the extended plateau I faced. I now started Alternate Day Fasting 3 days ago equipped with all the info I learned from Dr. O. Wish me luck. Thanks very much, Dr. O. Be blessed!
By Vladimir Rakic on 7/16/2023
I am really happy that i decided to purchase the course and go through it. Dr O has provided a tonne of information on all aspects of fasting, including the pros and cons of different fasting methods and durations. There are plenty of scientific journal references, though i appreciate the most the fact that he has lived throught the weight loss process and, in many ways, been the test subject himself to see if the methods provide results or not. I have also learned that there are steps to do prior to jumping into fasting, especially about regulating sleep as i find this to be my biggest challenge. I am looking forward to implementing the materials provided in the course as i continue my own journey to better health.
By Dean Oleary on 3/9/2023
Excellent course given by Dr O who has successfully completed these techniques himself as he not only details his own weight loss journey but his success in not putting the weight back on. I have read many fasting books including works by Dr Krista Varda who is a proponent of ADF but Dr O really lays these techniques out clearly, concisely and in a way that is doable without feeling too restrictive which is where a lot of the books/information on fasting for me fail. We are human ‘beings’ not ‘human ‘doings’ and this is where the techniques/information in this course score highly as it allows flexibility and freedom to tailor the principles to your life whilst still being successful. At the end of the day most diets revolve around calorie restriction but following Dr Os tutorials will make this journey easier and efficient. Finally he has a style and a way of teaching that that is very warm and friendly. Check out his YouTube channel as well. Highly recommended course if you ever struggled with permanent weight loss.
Quality Score
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Overall Score : 94 / 100







